Exhaust-heated oil-vaporizer



G. M. HOLLEY.

EXHAUST HEATED OIL VAPORIZER.

[\EPLICATION FILED DEC. 13. 1920.

Patented De0.13, 1921.

2 SHEETS-SHEET I.

INVENTOR G. M. HOLLEY.

EXHAUST HEATED OIL VAPORIZER.

APPLICATION FILED 050.13, 1920.

1,400,287, Patented Dec. 13, 1921.

2 SHEETS-SHEET 2- /G '7 .3 r g. 42% v 3/ Q 7 D/.| 7

Fla-III INVENTOR ETED STATES;

cnonen 1n. HOLLEY, or nn'rnorr,

MICHIGAN.

EXHAUST-HEATED OIL- VAPORIZER.

Specification of Letters Patent.

Patented Dec. 13, 192i.

Application filed December 13, 1920. Serial No. 430,365.

To aZZ whom it may concern:

Be it known that I, GEORGE MALVIN HoL- LEY, a citizen of the United States, residing at Detroit, in the county of Wayne and State of Michigan, have invented certain new and useful Improvements in Exhaust-Heated Oil-Vaporizers, of which the following is a specification.

This invention relates to externally heated oil fuel Vaporizers. The vaporizer is intended to be used in conjunction with an internal combustion engine and to be heated by the exhaust gases therefrom. A heated rlch mixture is produced in the heater, which is subsequently diluted with cold air in a well-known manner.

The object of this invention is to provide an improved form of vaporizer for use with fuels composed of hydro carbons having a wide range of boiling points. Specifically,

this invention provides means for removing the various hydro carbons as they each in their turn become vaporized, and thus the unvaporized fuel is progressively heated without super-heating the vaporized fuel. Another object is to provide means whereby any carbon that may accumulate within the vaporizer may be quickly and easily removed. A further object is to reduce the cost of manufacture to a minimum.

Figure I shows the fuel float chamber arranged to furnish the requisite rich mixture to the improved vaporizer, which is shown integral within an exhaust manifold, gvhich manifold also supports the float cham- Fig. II shows a transverse section on the line 22 of Fig. I through the center of the vaporizer and also shows the details of construction of the vaporizer itself. The means for diluting the heated rich mixture is not shown, as it may be any of the wellknown forms and is no part of this invention.

Fi III shows a section through the passage taken in the plane 3-3, and one of the horizontal chambers C.

' Description. In Fig. I A is the float chamber mainatomizing to the vaporizer C, which is in the form of a labyrinth or maze. The vaporizer C is shown cast integral within the exhaust pipe or manifold E, but may be made of a stamping, die casting or of a separate casting. In C a cover F is provided for inclosing the vaporizer C 7 so as to force the vapor to pass back and forth through the channels in C, as shown by the arrows on Fig. I. In F are provided a number of outlets D, which are arranged adjacent to the under side of the partitions in C so as to separate the vapor from the unvaporized fuel. These outlets D are preferably inclined in the direction of the flow, as shown in detail attached to Fig. II, so as to still further assist in separating the vaporized from the unvaporized fuel. From F pipe G leads the fuel to the diluting means not shown. B is the inlet from A into C.

The lowest opening D is enlarged so that should the upper opening become clogged with carbon, the engine will still continue to operate, although not so satisfa'ctorily.

Operation.

The rich mixture supplied by A is heated in the tube B within the exhaust manifold E. The rich mixture then flows downward through the labyrinth C, the vaporized fuel and air passing through the outlets D into the cover F and so'into the pipe G. By this means the semi-vaporized fuel in the passages which form the labyrinth in C is separated, the vaporized fuel passing out of D and the unvaporized fuel passing on downward through the labyrinth. Thus ultimately all of the fuel is vaporized and none of the fuel is superheated.

Claims I quid fuel, consisting heating medium passes, a labyrinth Within the chamber, a plurality of outlets from said labyrinth, a cover for said chamber containing a common passage for the outlets from 6 the labyrinth.

. 3. A vaporizer for liquid fuel, consisting of a chamber Within a pipe through which a heating medium passes, bafi'les within the chamber dividing the chamber into horizontal passages, a cover for the chamber, an 10 outlet for each passage communicating with a common outlet passage in the cover.

In testimony whereof I aflix my signature.

GEORGE M. HOLLEY. 

